Angle grinder is a universal device with which you can work with any material. Perform cutting, peeling and grinding operations. Among the people, she received the name Bulgarian. When handling the tool, you need to carefully select the circles. It depends on the size of the equipment, the rotational speed and the type of surface to be treated.
A variety of discs for grinders
The range of discs for angle grinders is great. When buying, you need to understand well what discs are for grinders. They differ depending on the work performed:
Characteristics and choice of circle
When choosing a circle for an angle grinder, you need to take into account what material will be worked with. In this regard, several factors are taken into account:
Sometimes there is a desire to install a circular circle on the grinder. This cannot be done. The reasons are as follows:
Cutting disc for wood
The cutting disc for wood for grinders is made of high-strength alloy. When choosing, you need to be guided the following rules:
- Hard wood requires the use of an variably beveled wheel.
- For softwoods and softwoods, a straight tooth is used.
- Medium-hard rocks lend themselves to cutting a trapezoidal tooth.
In progress circles are heating up. It is not always possible to cool them down. Therefore, slots are made from the side of the teeth to the axis. They are 2 mm wide and 20 mm deep. Sometimes they are filled with copper. expansion is compensated. This prevents deformation of the metal.
Rough stages of work
At the first stage, the blanks are peeling. To do this, there are nozzles on the grinder for working with wood:
Gentle discs for wood
These are nozzles universal type. They are used depending on the work performed:
Tool cutter features
The cutter as a nozzle for the grinder is allowed for use, but requires precautions. With its help, you can make grooves, roughly process the ends of the workpiece or saw it. In the process of work, its jamming is excluded, but you need to know at what speed it is allowed to use it. It is important to consider in which direction the cutter is rotated relative to the location of the angle grinder.
The surface quality will be somewhat different from the work on a milling machine. However, the necessary operations can be done.
Using a chainsaw chain
If put on chainsaw chain on disc, you can cut boards up to 40 mm. In doing so, care must be taken. To avoid injury, you must adhere to the rules:
- Do not remove the protective cover. If it interferes with the installation, then the equipment cannot be used.
- The RPM value is set according to the one indicated on the disk. Otherwise, the chain will jump off.
- Work is carried out in protective glasses and gloves.
If it is necessary to work with wood, it is possible to use attachments for a grinder for wood processing. However, you must first read the instructions. Such work has its own characteristics. If you ignore them, you can easily get hurt.
Modern angle grinders, better known as grinders, are used for various technological processes in construction and repair. When choosing a disc for a wood grinder, you need to take into account the important features of not only the tool, but also the processed objects. As a rule, the device is used for cutting metal. However, a large number of different disks allows you to use it to solve other problems.
First you need to decide on the tool (grinder - the correct name is a chain angle grinder), which is planned to cut wood. It is known that the discs are made according to the standard sizes of the grinder. The smallest diameter is 115 mm, but this tool is rarely used. A wide variety of power tools on the market are designed to facilitate various types of manual labor. If specialized equipment is simply necessary when working in the professional field, then in everyday life it is not always rational to spend money on expensive hand tools.
To operate the machine with wood, a special drive is needed.. Absolutely contraindicated for cutting abrasive and diamond, carbide wheels. This will not help to cope with the task, but rather lead to the destruction or overheating of the device.
When choosing woodworking universal accessories, you should know that there are not only cutting discs, but also grinding wheels. To clean the tree, use the petal circle for the circular. The working surface of such a device consists of several layers of sandpaper, which has a different degree of roughness. The lower the roughness, the softer the sanding. Flap wheels allow you to perform polishing, which depends on the degree of detail.
Grinding wheels and a cutter for a grinder must be of high quality, which affects not only the quality of the work performed, but also the safety of the master. Processing wet wood is prohibited, as the result of such manipulations can be unpredictable.
For roughing operations, which are often used as initial processing, special cleaning agents are used. They are necessary in order to remove a layer of paint from a painted surface.
For processing with a grinder and a circular saw, specially designed nozzles are needed, with which you can grind, polish and mill surfaces. The choice is up to the master.
You can use the following circles:
- An abrasive wheel for wood, which is used to work on various surfaces. Depending on the thickness of the circle, it can be cut and polished.
- The diamond wheel is designed to work with stone, concrete and other building materials. Such circles are divided into segmented and continuous. The first type, due to better performance and better cooling, provides improved performance. These discs can be used for minor metal cutting.
- Regular circle. It should be noted that it is not recommended to use it for sawing wood products without experience. If possible, it is better to use another tool.
If you need to remove a layer of paint from a wooden surface, you must install the nozzle on the grinder. There are many different options for sale. They all differ in form, design and the specifics of the work that can be done with this tool.
The next cutter, due to the fact that the spikes on it are installed on a plane, allows you to level wooden surfaces - for example, if two boards on the floor in the place of the final construction are at different heights. This defect is easily eliminated, and the boards are then in the same plane.
There are circles of twisted wire or in the form of a disk with wire windings clamped in the central part. In addition to this, the circle is often used to change the wood, it gives it a worn look. If such an effect is applied on wide surfaces in a professional environment, it is better to use special hand-held machines with wide parts.
For grinding surfaces, there are special attachments consisting of a metal base on which an abrasive grinding ring is fixed. The circle is screwed onto the grinder shaft and tightened with a special key. Often it is equipped with an adapter for mounting in a drill holder or drilling machine.
To choose the right disc, first of all, you need to decide what material to work with.
Can be applied:
- Thin blades (1-1.6 mm) are best for cutting thin sheet metal such as car body. When working with thicker corners, they can speed up the cut, but the risk of damage to the disc is greatly increased. In this case, it is safer to use thicker discs.
- Rigid - most often used for active processing (cleaning) of welds after welding and gluing metal surfaces before welding itself. With their help, remove (cut out) braces and protrusions on the metal. They are also used in cases where the metal surface must be cleaned of rust or old paint.
- Elastic - mainly used as an alternative to metal brushes. They perfectly clean even a curved metal surface from outdated paint and other similar coatings.
- Coarse - used for grinding metal and wood. Even the smallest welds can be smoothed out with large discs (with the largest grit), but are mainly used for finer operations. They remove the faded top layer of wooden surfaces, polish the wooden beam, rust and outdated metal paint.
- Abrasive - for working concrete, diamond blades are somewhat smaller, but they also have a shorter service life. Their use is justified only when it is necessary to perform a small one-time work.
- Diamond blades are used for cutting various products made of concrete and stone (paving slabs, steps, curbs, facing stones), as well as bricks of all types.
For working with reinforced concrete and stone materials, turbo diamond blades (both conventional and wave) are best suited. When choosing, keep in mind that a turbo will provide a cleaner cut than a diamond wheel.
If the appliance has an outer diameter of only 125 mm and the grinder is rated for 115 mm, it cannot be installed for the following reasons:
- First, the discrepancy between the revolutions of the tool itself and the circle is dangerous for the user.
- Secondly, when it heats up and expands, the disc can get stuck, resulting in a jerk.
The number of teeth matters. The smaller the number, the faster the work will be, but the quality of the cut will be less, and vice versa, a larger number increases the cutting time, but the ends of the resulting parts will be smooth.
With a large number of small teeth, the device will work with low efficiency. Large teeth allow you to work faster. The cost of the disk depends on the external size, number of teeth, manufacturer. The most expensive model is with a circular saw.
For many reasons, it is better to buy circles from well-known companies. The concept of "quality disc" includes not only the degree of rupture of the disc and its abrasive properties, but also safety.
When choosing a new wheel, it is worth making sure that it is designed for the speed of the grinder. Permissible speed is indicated.
You need to follow the rule: the larger the rasp disc, the slower the speed. In addition, manufacturers protect the user as much as possible by releasing discs with a large (sometimes double) strength. But if the disk is used more than necessary, all these measures lose their meaning.
- work with a protective cover;
- protect the face and head;
- check lumber for nails and screws;
- hold the device firmly by hand;
- use an additional handle (many hold the device with one hand);
- do not allow the tool to heat up, avoiding the risk of smoke.
In addition, if you do not plan to work with a grinder on a large scale, you do not need to buy a lot of discs “in reserve” - since the humidity contained in the air begins to affect the bakelite. The bond strength is markedly reduced. It is better to get the right wood discs for angle grinders (grinders) immediately before work.
Wood is a specific heterogeneous material that requires special wheels to work with. Discs for grinders for metal are categorically not suitable for cutting wood! Otherwise, the disk may be destroyed during operation.
The saw blade for wood for a grinder is the same as for a circular saw, but of a smaller diameter. In most cases, discs with a diameter of 115 mm and 125 mm are used, which can be bought in our online store.
Attention! Working with a saw blade is extremely dangerous and requires skill with an angle grinder and great care. When sawing, it is possible for the blade to jam in the wood, which will lead to the tool being pulled out of your hands and serious injury. It is categorically impossible to cut wood with a grinder "on weight". The tool must be securely fixed on the table.
Choosing a saw blade for a wood grinder
When choosing a saw blade for wood, pay attention to the shape of its teeth, which can be alternately beveled, straight and trapezoidal. In our online store you can buy wood circles for a grinder with variable beveled teeth with a diameter of 115 and 125 mm. They are suitable not only for sawing wood, but also for cutting aluminum and laminate.
Another factor to pay attention to is the number of teeth on the disc. The higher the tooth frequency, the cleaner the cut will be.
Angle grinder is a very useful tool that can be used in various industries. It is due to its versatility that it has become widespread both at industrial facilities and at the household level.
Types of nozzles for wood
As a tool for woodcarving, only angle grinders with speed control are suitable. Since the main purpose of the grinder is the grinding of homogeneous materials, the processing of the heterogeneous structure of wooden materials must be approached very carefully.
The following types of circles for wood can be distinguished:
- Wood saw for grinder
- Cutting discs
- planers
- Grinding
Each of these parts must be used for its intended purpose.
saw blades
A saw blade for wood for a grinder consists of a metal circle with a chain attached to the edge. The design of special sawing tools is similar to those used for chainsaws. But saw blades are made of tungsten carbide. When a disk for a grinder on a tree hits a solid obstacle in the wood - knots, resin, metal, its base rotates without breaking the chain. With chain nozzles, it is quite easy to clean the logs from knots and bark, to give them the necessary initial shape.
Cutting discs
Various manufacturers also produce cutting wheels for wood specifically for angle grinders, for example, the Bosch cutting wheel. Their design is significantly different from the design of discs for circular saws. Usually they have side teeth that protect the nozzle from jamming. Cutting tools differ in the number and shape of teeth:
- bevelled;
- straight;
- in the form of a trapezoid.
The first version of the shape of the teeth is considered universal. It is suitable for all types of wood with small amounts of work. When sawing wood from soft varieties, it is quite possible to use discs for a grinder on wood with a straight tooth. Trapezoidal teeth are capable of processing fairly hard wood products: chipboard, fiberboard, OSB boards.
In addition, cut-off wheels vary in diameter. The minimum size is 115x22 mm. The most commonly used circles with a diameter of 125 mm, they are universal and suitable for a wide range of jobs. The maximum possible size is 230 mm. But the latter option is undesirable to use when working with wood, as the likelihood of injury increases. Depending on the size chosen, the depth of cut in the wood will also be different.
Disks - planers for grinders
It is possible to use the angle grinder as a planer. For this, special circles are used - planers. Work with such nozzles is allowed without a protective casing, since solid discs are not destroyed. Many brands of wheels can be sharpened repeatedly. Before use, an additional handle must be installed on the angle grinder to more securely hold the tool with both hands.
Grinding discs
This type of circles allows you to use the machine for its intended purpose. For finishing and polishing wooden surfaces, various types of nozzles can be used:
- cord brushes;
- end circles;
- petal nozzles;
- emery circles;
- cutting nozzles.
Rough processing of wood is carried out with the help of special cord brushes. End discs are designed to level the edges of parts, which is often required when miter sawing workpieces. They make a great file replacement.
The widest range of grinding attachments is for flap wheels. Depending on the size of the abrasive grain, the surface of the wood can be cleaned with varying degrees of polishing. With a gradual transition from using a coarse-grained nozzle to discs with finer grains, the effect of polishing parts is achieved. The system of trapezoidal petals, which are stacked with a three-quarter overlap on each other, wears rather slowly. If the relief surface of a wooden product is complex, then petal discs with a radial arrangement of abrasive strips are used.
The use of sandpaper or sandpaper on a special nozzle allows you to grind fairly large areas of wooden surfaces. The ability to quickly change the sanding cover makes these tips versatile.
When removing old paint and varnish coatings, peeling nozzles are often used. As a rule, this is a wire brush attached to a metal base. It can be located either parallel to the surface of the circle or perpendicular to it. There are options for fixing the bristles on the perimeter of the disc.
When working with wood, you need to make sure that it is fairly dry. If there is fungal damage on the surface of the workpiece, they must be cleaned to healthy wood.
Universal wood discs for grinder Graff Speedcutter
The Graff Speedcutter wood saw blade is a three-tooth saw blade designed for high-speed angle grinders. It is used in models with a maximum rotation speed of 12.2 thousand revolutions per minute.
The three carbide teeth are made of tungsten carbide and set at a 5° angle to the steel base of the tool. Thanks to this design and the special shape of each tooth, the cut surface is very clean and even. A disc is being made for the Graff Speedcutter grinder with a size of 125x22.23x3 mm. The cutting width of the wood is 3.8 mm.
Graff Speedcutter wheels are intended for artistic wood carving, cleaning and grinding of various types of wood. They are also used when cutting and selecting grooves in wood, its transverse cutting and longitudinal cutting. It is possible to use such nozzles when processing parts made of aerated concrete and gas silicate, fiberboard, chipboard, laminate, drywall.
Rules for working with the tool
Any tool can pose a serious danger if the rules of the instructions for using it in a particular situation are not followed. Bulgarian for cutting wood in this sense is no exception. The main points that are necessary when working with disks for an angle grinder - angle grinder on wood:
- Choosing the right circle size
- Installing a wood disk for a grinder
- Selecting the appropriate operating mode for the machine
- Refusal to use damaged circles
- Use of personal protective equipment
The nozzle size should be installed without problems under the protective cover of the machine. If this does not work, do not remove the protection. When working on wood with an angle grinder, it is necessary to use only special circles on wood for an angle grinder. The use of attachments that are designed to work on other materials may result in injury or a damaged tool. In order to avoid the destruction of the disk on wood for the grinder, the speed of the grinder must correspond to that indicated on the surface of the circle. Before starting work, it is worth checking the wood disk for defects and damage. If they are present, then it becomes dangerous to use. When working with the tool, eye and hand protection must be used. It would be best to use tight overalls.
An angle grinder, if you know and correctly use all its capabilities, is a truly universal device that lends itself to almost any material. And if we are talking about processing wood on a large scale, then the “grinder” is much more effective than manual abrasive tools and fixtures. The main thing is to choose the right nozzle. This article will help you understand their main modifications and specifics of application.
Rough cleaning of wood
planer disk
Such a nozzle almost completely replaces this hand tool.
An irreplaceable thing, if it is required, for example, to make a rough processing of a log - when erecting a log house, preparing fence supports, and so on.
Application Features:
- In this case, the protective cover can be removed. Such a nozzle is one-piece, and its destruction does not occur. But protection from flying wood chips (glasses, tight clothing, gloves) is required.
- It is allowed to work only with a “grinder”, in which a second handle is provided (or installed). The angle grinder must be held when roughing wood with both hands.
Peeling disc
The main purpose of such nozzles is to remove the bark from the wood, to trim the workpiece. If the "grinder" is in capable hands, then with such a device you can make a sample of the material. For example, if you need to cut a bowl. If a log cabin is being built, then an angle grinder with such a nozzle perfectly replaces a carpenter's ax.
In some cases, a peeling disc can be used to cut. True, the cut will be wide, and there will be a lot of waste (chips, sawdust).
Milling
Disks
These nozzles are available in various designs. The main difference between the devices is the size of the abrasive grains.
They are not much different from rasps in terms of specific application. The difference is only in the speed of the technological operation. With certain skills, it is advisable to use these for finishing wood.
cutters
They are, and specially for wood. The assortment is significant, since nozzles of this type differ in the configuration, location and size of the teeth.
Purpose of cutters:
- Selection of grooves.
- Edge trimming.
- Cup cutout.
- Sawing (for wooden blanks of small section).
Application specifics:
- When processing wood with such nozzles, it is forbidden to dismantle the protective cover.
- Each product has instructions. It clearly indicates for what types of work this nozzle is intended, the recommended speed of the grinder, and so on.
wood sanding
If you decipher the abbreviation angle grinder, then it is clear that it is the finishing that is the main purpose of the grinder.
cord brushes
They are mainly used for primary (rough) grinding of wood, when it is required to smooth out the irregularities of the sample.
End discs
The names speak for themselves. Such nozzles process the final parts of wooden blanks (cuts). Especially effective if you have to deal with angular (oblique) cuts.
Petal nozzles
The most used grinding devices for the grinder.
Such nozzles are applied sequentially, so several of them will be needed to process wood. Grinding begins with a disc with a "coarse" abrasive, and gradually the size of its grain must be reduced. Consequently, the devices in the process of working on the "grinder" periodically change.
grinding wheels
The most universal adaptation to the "Bulgarian". It alone is enough for varying degrees of grinding. The nozzle itself is a metal base on which circles with one grain or another are attached. They are easy to change, or as they wear out, or in the event of a transition to another area of work. Therefore, only circles are consumables. The nozzle itself is used indefinitely.
Application specifics:
- Wood grinding.
- Parquet scraping.
- Edge and end processing.
- Cleaning wood before painting.
wood polishing
For these purposes, brushes, disks, circles are used. Their "working elements" can be made of sponge, felt, fine-grained "sandpaper" and a number of other materials.
The article provides examples of only the main types of nozzles for the grinder. There are quite a lot of products of this class, so it is easy to choose the best option for processing any wood. The author hopes that the information provided will help the reader in this.
On a note!
Wood processing also means its cutting (sawing). Sometimes, in the manufacture of piece parts, you have to adjust them at the installation site even before you start grinding the sample. Some "craftsmen" (and there are many of them among friends and on the Internet) are advised to use for such operations. It is strictly forbidden! Here are just the main reasons why this should not be done.
- "Bulgarian" - a high-speed machine. And although the metal from which the cutting discs are made is durable, in this mode it does not withstand for a long time. More precisely, cutting edges (teeth), which are fixed by soldering. With intensive work, they fall off and scatter to the sides, and with great speed. The consequences are easy to predict.
- Not all discs are suitable for installation on angle grinders in terms of size (primarily, outer diameter). So, you have to dismantle the protective cover. The same thing - you can forget about the safety of the employee.
- The structure of wood (even hardwood) is quite loose. Therefore, it is highly likely that the saw blade may jam due to constant vibration. How the “Bulgarian” will behave in such a situation, given its power and speed, no one will undertake to predict. But the fact that it breaks out of hands quite easily is unequivocal.
- Constant changes in the mode (for the same reason - the viscosity of the lumber) lead to a systematic overheating of the angle grinder engine. With this use, the "grinder" will not serve for a long time.
That is why wood processing with its help is carried out only superficially - rough cleaning, grinding, brushing. And for cutting, you should use sawing tools and mechanisms (hacksaw, circular saw, electric / jigsaw, and so on).
